Tag Archives: Autumn Hawker

September Cooling

Last year it felt like summer right up until the Autumn Equinox and even beyond, but this year autumn seemed to follow the old Celtic tradition and start in early August. The bouts of rain have brought a coolness in with them and only for the bright sunlight of the late morning and afternoon, between showers, creatures would be few and far between. However, keep an eye out for the big strong Autumn Hawker dragonfly (Aeshna mixta) which can be seen patrolling gardens an hedgerows all across Wicklow right now. Occasionally they land and you can see their beauty:

These powerful dragonflies are migrants and snatch big insects such as butterflies and moths out of the air. They hunt by sight, like most birds. The really funny thing about them is that this species was a rare visitor to Ireland until the turn of the 21st century when they first began to arrive in large numbers. But some insects are adept at hiding from such predators, such as the Silver-Y moth (Autographa gamma). Can you see this one hiding among the dried flowers of a phacelia plant? Look for the Y markings.

   Many other flying insects are ending their life-cycles, and their last act is to mate and lay eggs from which caterpillars hatch. If you look on lettuces, cabbages, watercress or nasturtiums you have a good chance of seeing quite big Large White butterfly caterpillars (Pieris brassicae), like this one stretched out on a nasturtium leaf.

And lastly, and sadly, there are still some small numbers of swallows around. Our swallow is found not only  in Europe and Africa but also across much of Asia and in the Americas where it migrates from North to South America every year. It is properly known as the Barn Swallow (Hirundo rustica) and it feeds entirely on insects, so far as is known. Here are a large number of them I photographed at the end of August, as they gathered on electricity cables to rest before beginning their long flights south across Europe and over the Mediterranean Sea and the vast Sahara Desert to tropical and southern Africa where they will spend our winter. For them it will be another summer.

October Twilight

October is a very strange time of year – September seems like an extension of summer, but colder, and then very suddenly October arrives and the flowers of summer begin to die off, the leaves yellow, or redden, or both, and fall off deciduous trees as the nights grow longer than the days. Everywhere gets gradually more muddy as leaves, flowers and berries decay on the ground.  But there is still a lot to see amid all the nostalgia of another year growing to an end.

There are still some Swallows flying about on their journey south back to Africa. It's a good time to see and photograph them as they perch on wires. The light might not be so good though.
There are still some Swallows flying about on their journey south back to Africa. It’s a good time to see and photograph them as they perch on wires. The light might not be so good though.

At this time of year our swallows, the Barn Swallow (Hirundo rustica), tend to perch for long periods to rest their weary muscles before making their autumn migrations. There were definitely fewer of them around Wicklow this summer, which is slightly worrying as something must be preventing them arriving safely in Wicklow.

The Autumn Hawker dragonfly usually arrives in August to hunt butterflies and other insects. This year they didn't arrive until mid-September and you can still see them patrolling footpaths and garden driveways.
The Autumn Hawker dragonfly usually arrives in August to hunt butterflies and other insects. This year they didn’t arrive until mid-September and you can still see them patrolling footpaths and garden driveways.

Ironically our autumn was better than our summer this year, although not quite as warm, although certainly more stable. Eventually the annual arrival of big dragonflies occurred, the Migrant or Autumn Hawkers (Aesna mixta) and there are still a few around, although very difficult to photograph or video as they fly. I usually watch one land and slowly approach to get a good photo. If you move slow they will remain still.  But there are some other very interesting insects around, and some are both interesting and slightly creepy, such as this one:

A noctunal visito to a window, this large and handsome insect is a Burying Beetle.
A noctunal visito to a window, this large and handsome insect is a Burying Beetle.

Burying Beetles are quite closely related to chafer beetles (like the Cockchafer) and dung beetles, like the Common Dor Beetle. However, unlike these beetles, Burying Beetles lay their eggs in corpses which they find in the countryside, and they actually bury the animals they find underground. They are very intelligent creatures and very recently it was discovered (with the aid of special cameras) that they keep their larvae in nests and will feed them mouth-to-mouth, as birds do. Even more remarkable, the young ‘tweet’ when they’re hungry. This extremely handsome species is Necrophorus investigator (but there are many very similar ones and some even quite different. Watch out for them this autumn as they fly across the deep night skies.

 

A Little Bulletin

I’m planning to upload some information about an interesting archaeological site in west Wicklow for my next instalment but am still researching what I feel must be an ancient carved stone cross on the site. Anyhow, in the meantime I would like to thank father and son team Martin and Wayne Nolan for the information they were able to give me and I promise to put the photos up very soon.

In the meantime, a few words on the Autumn Hawker dragonflies which are hunting in gardens and along roadside hedges.

A big male Autumn Hawker dragonfly  holding an equally large female on the ground beneath him. She allowed him to mate and I actually got to watch them form their spectacular 'mating-wheel' and take off into the air. Very big insects!
A big male Autumn Hawker dragonfly holding an equally large female on the ground beneath him. She allowed him to mate and I actually got to watch them form their spectacular ‘mating-wheel’ and take off into the air. Very big insects!

The Autumn Hawker (Aeshna mixta) is only a very recent arrival in Wicklow, and of course Ireland. I first saw one in 2004 and there were only sporadic records before that. Because of their size they are impossible to miss. This large and very robust species gets its name because it tends to show up in Autumn. They hunt during rain or shine and are truly spectacular, and very difficult to photograph too. But that’s the sport.